Panasonic PT-LC56U, PT-LC76U manual Using the Serial connector

Using the SERIAL connector

The serial connector which is on the side connector panel of the projector conforms to the RS-232C interface specification, so that the projector can be controlled by a personal computer which is connected to this connector.

Control commands

The commands which the personal computer can use to control the projector are shown in the following table.

Connection

SERIAL(female)Computer

DIN 8-pin (male)

Serial adapter (ET-ADSER : sold separately)

Pin layout and signal names for SERIAL connector

	1	2
	3	5
	6	8
	DIN 8-PIN connector
	seen from outside
Pin	Signal	Contents
No.	name
%	RXD	Received data
&	GND
'	TXD	Transmitted data
#
$		Connected internally
(
)		NC
*		NC

Communications settings

Signal level	RS-232C
Sync. method	Asynchronous
Baud rate	9600 bps
Parity	None
Character length	8 bits
Stop bit	1 bit
X parameter	None
S parameter	None

Basic format

The data sent from the computer to the projector is transmitted in the format shown below.

STX Command : Parameter ETX

Start byte		1 byte	End byte
(02h)			bytes (03h)
	3 bytes	1 byte–5

NOTE:

BThe projector can not receive the command for 10 seconds after the lamp is switched on. Wait 10 seconds before sending the command.

BIf sending multiple commands, check that a response has been received from the projector for one command before sending the next command.

BWhen a command which does not require parameters is sent, the colon (:) is not required.

BIf an incorrect command is sent from

the personal computer, the “ER401” command will be sent from the projector to the personal computer.

Command	Control	Remarks
	Contents
		In standby mode, all commands other than
PON	Power ON	the PON command are ignored.
		BThe PON command is ignored during
		lamp ON control.
		BIf a PON command is received while the
		cooling fan is operating after the lamp
POF	Power OFF	has switched off, the lamp is not turned
		back on again straight away, in order to
		protect the lamp.
AVL	Volume	Parameter
		000–063(Adjustment value 0–63)
	Input signal	Parameter
IIS		VID=VIDEO	SVD=S-VIDEO
	selection
		RG1=RGB1(YPBPR1) RG2=RGB2(YPBPR2)
		Parameter
	Lamp ON	0 = Standby
Q$S		1 = Lamp ON control active
	condition query
		2 = Lamp ON
		3 = Lamp OFF control active

Cable specifications

(When connected to a personal computer)

At the projector		At the computer
		(DTE specifications)
	1		7
	2		8
	3		3
	4		5
	5		2
	6		6	Others
	7		9
			1
	8		4

60-ENGLISH ENGLISH-61